[Bug]: Package new firmware rk3576 flashing stuck in the now starting desktop environment

### What happened?

SSH login to the terminal and run systemctl restart gdm.service to enter the desktop ；Write the restart-gdm.service service, which can enter the desktop upon startup; May I ask what the reason is?

[Unit]
Description=My Custom Service
After=network.target

[Service]
Type=simple
ExecStartPre=/bin/sleep 15
ExecStart=systemctl restart gdm.service

[Install]
WantedBy=multi-user.target

### How to reproduce?

[Unit]
Description=My Custom Service
After=network.target

[Service]
Type=simple
ExecStartPre=/bin/sleep 15
ExecStart=systemctl restart gdm.service

[Install]
WantedBy=multi-user.target

### Branch

main (main development branch)

### On which host OS are you running the build script and observing this problem?

Ubuntu 24.04 Noble

### Are you building on Windows WSL2?

- [ ] Yes, my Ubuntu/Debian/OtherOS is running on WSL2

### Relevant log URL

_No response_

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct

Start with the reported restart-gdm.service unit and the systemctl restart gdm.service entry point, then reproduce the startup behavior on the rk3576 firmware setup. Check the available service and boot output, since no log URL is provided; done means explaining why startup stalls and identifying a verified correction.

Written by the indexing model from the issue text.